Wrench.



PATIYEIITEE) JULY 10, 1906.

UHL u! 2 a Z V f l nH H w W n v 1 m m E I Q 6/ 2;. wfl w n a w F. WILLIAMS 6: J. DAVIS.

WRENCH. APPLICATION FILED FEB.17.1906.

- STATES FATEE Tofu/ll whom it may concerns- I Be it known that we, FRANK Win-trans and ive. 8251874.

JoHN. DAVIS, citizens of the United States,

residing at Kelvin, in the 'countyof Pinal,

Arizona Territory, have invented new-and useful Improvements in VVrenches,-of which which grasps the the following is a specification.

This invention relates to wrenches, and

particularly that class of wrenches known as ,the' tStillson, the object of the present invention being to provide means whereby the gripping action of the jaws on a pipe, rod, or

the like s insured without the necessity of the mechanic graspin the movable or swinging jaw with one han while the stationary or fixed jaw is operated by the other hand, handle or stock of the wrench, the wrench thus being adapted to be used by one hand and to effectually grip the pipe, rod, or other object intermittently as the wrench is swung back and forth,

lVith the above object in view the invention consists in the novel construction, combination, and arrangement of parts, hereinafter more fully described, illustrated, and claimed. e

In the acccmpanyin drawings, Figure l-is a side elevation of'a Stfilson wrench embodying the present invention. Fig. 2 is a similar -View showing the swinging jaw moved to its gripping position. Fig. 3 is a front edge view of the. wrench looking toward the outer ends of the jaws.

Referring to the drawings, 1 designates the handle or stock of the wrench, which is provided at its outer end with thestationary jaw 2. j

3 designates the swinging jaw, provided with the usual threaded shank 4, which passes throughthe pivoted yoke 5 and is ad- .justable therein and therethrough by means i The yoke 15 is" pivotally connected at 7 to the handle or of the usual adjusting-nut 6.

stock 1 close up to the stationary jaw 2 and comprises a loop portion 8, which embraces and is movable laterally onthe handle or stock 1 to admit of a limited relative movement between the swinging and stationary j aws the construction thus far described being that of the Stillson wrench at present in com-- mon use. In carrying out the present invention we equip the yoke 5 with an actuating or tilting device for the swin ing jaw 3, which ur der the preferred embo nnejnt of this in-f' vention consists of auxiliary jaws 9, extending from the bottom or of teeters rest: I I 17.1906. Seria No. 301.619.

grip on the pipe,

loop portion 8 of the j reasedterrorists pivoted yoke upward on opposite sides of the stationary 'aw 2, as clear y shown in the drawings,- the said auxilia extending slightly above t e toothed gripping-face of the stationary jaw 2, as shown in Fig. 1. The auxiliary jaws 9 are connected atftheir outer side by a cross-web or connect- .m portion 10, so as to brace and reinforce said auxiliary jaws, and between said side portion or web 10 and thehandle or stock 1 there is arranged a spring 11, which is secured to the handle and bears outwardly against the inner face of the connecting portion orweb 10', the tendency ofsaid spring being to throw the jaws open to receive the object to be operated upon and also to hold the toothed up auxiliary jaws elevated s 'ghtly above the toothed working face of the stationary jaw, as shown in Fig. 1.

The usual jaw-closing spring 13 is connected with the rear edge of the handle, as

shown at 14, and extends upward within the yoke 5, pressing said yoke rearwardly, awayfrom the handle 1, and thereby pressing theswinging jaw 3 forward and in closer relation to the stationary jaw for obtaining the initial rod, or other object.

From the foregoing description it will be seen that-when the jaws are placed over a pipe or similar object and the handle-1 moved in the proper direction to grip the, object said object will be grasped by the teeth of the the auxiliary jaws suffiswin ing aw and cient y to cause the auxiliaryjaws to move in a direction away from the swingin jaw, and this movement is continued until t e ipe or other object depresses the toothed e ges or the auxiliary jaws into the plane of the working face of the stationary jaw, whereupon the said pipe or other object becomes firmly gripped between the stationary and swinging 'aws. It will be understood that the auxlliary jaws do not obtain ano erative grip on the pipe or other object and 0 not in reality constitute. the ripping stationary jaw or any portion of said jaw, but are merely used to insure a frictional engagement of the wrench with the pipe or other object and rock the yoke 5, and thereby the swinging jaw3, until said swinging jaw 3 in moving toward the stationary jgw'causes the pipe or other object to be stationary jaw 2 and t e swinging jaw 3,

The arrangement described enables a the wrench to be manipulated with one hand,

jaws normally the adjacent face 'ofor edges 12 of the mly grip ed between the mainmess to receive leaving the other hand free,

and the gripping 'tionary and swinging jaws of the wrench is insured. 1

The springs 11 and 13 to a certain extent counterbalance each other; but the spring 11 is made slightly stifier than-the spring 13, so as to nonnally hold the jaws open in readi I the pipe, with the toothed edgs of the sup lemental 'aws 9 extended slightlybeyond't ie toothe Working face of the stationaryjaw.

We claim- 1. A wrench for application to a pipe or other device comprising a handle, a stationary jaw, a swinging jaw, and means movably mounted adjacent to one 'of said jaws adapted tohe engaged by the pipe or other device to move the swinging jaw toward the stationary jaw to grip said p pe.

2. A- Wrench for application. to a pipe or other device comprising .a handle having a (stationary jaw and a swinging jaw, and

means carried by the swinging jaw and movable adjacent to the stationary jaw and adapted to-be engaged by the pipe or other defice which acts to'move, the swinging jaw towzirdthestation ary jaw to grip the pipe or other device between the same;

3.. A wrench for application to a pipe or other device comprising a handle having a stationary jaw, a yoke pivoted thereto, a

swinging jaw carried by the yoke, and Itieans on the yoke adapted to be engaged by the pipe or other device for swinging the; the

and throwing the swinging jaw towar the;

stationary j aw.

4. A wrench. for application to a pipe-or ,other device com risin a handle havin a stationary jaw an a swinging jaw, a pivoted yoke connecting said jaws, and an auxiliary jaw carried by the yoke and adapted to pro ject slightly beyond the working face of the stationary jaw to be engaged by the pipe or other device, whereby the pipe acts on the auxiliary jaw and thereby causes the swinging jaw to. move toward the stationary jaw.

5. A wrench for application to a pipe or other device, com risinga handle having a stationary jaw and a swinging jaw, a pivoted yoke connecting said jaws. and connected auxiliary jaws carried by saidyoke and having toothed ed es which project the Working face oithe stationary jaw to'be en gaged by the pineor other device, said pipeacting on the auxiliary jaws to move the swinglng aw toward the stationary aw.

In testimony whereof we affix our signatures in presence of two witnesses.

FRANK l/VILLIAMS. JOHN DAVIS. Witnesses:

W. H. MAR UIS, J. W.'BEEBE 

